theVar
 
BY MEMI LAVI
memilavi.com


Welcome to the August 2026 edition of theVar!

In this edition - 7 SaaS engineering mistakes, cross-region Cloud Run, using “it depends”, context vs prompt and more

As usual, if you found something interesting that you think should be included here, you're interested in a sponsorship, or you have something to say about the content of this newsletter - drop me a mail at [email protected]

Architecture


Why “It Depends” Is the Most Future-Proof Phrase in Software - When asking an Architect about whether to use this or that, which platform is the best etc. - in most cases, the answer you’ll get is “It Depends”. And it turns out that this is often the right answer, even in the AI era. Read more about it in O’Reilly Radar.


Designing a URL Shortener: The Cache Strikes Back - URL shorteners are quite simple service, but they require lightning-fast performance. Here is a journey of one developer who went on to design and develop such a service, and how it used cache smartly to improve its performance.

How Data-Driven Software Solutions Improve Decision Making?   - Businesses generate more data than ever before, but data alone does not create better decisions. The real advantage comes from turning that data into meaningful insights that leaders can use to improve operations, reduce risks, and identify new opportunities. How can that be done? Read more here.


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Cloud


Making highly available, multi-region Cloud Run services just got easier - Having multi-region services in the cloud can greatly improve your system uptime, and protects you against region failures. However, often configuring these services is a complex and cumbersome process.
To help us with that, Google just improved and simplified the way you can deploy multi-region Cloud Run services. Read about it here.


Choosing the Right Agent in Microsoft Foundry  - Microsoft Foundry offers to types of agent service: Hosted and Prompt, each offers its own pros and cons.
So which one should you use for your app? Learn about it in the Azure Architecture Blog.


7 SaaS Engineering Mistakes That Prevent Startups From Scaling  - Launching your own SaaS product is an exciting moment, and one that’s becoming easier these days with AI. However, even SaaS systems need design, and some design mistakes can break your product. Read about these mistakes and how to avoid them here.

AI


Introducing AI Futures - AI Futures is a new group in OpenAI, with the goal of looking into preserving free society while accommodating the emergence of transformative AI. Read their first post here.

Ground Truth of AI-Written Code: Why Context Matters More Than Prompts  - When working with AI code assistants we put a lot of emphasis on the prompt. But it turns out that often the context is way more important than that, and it can dictate the quality of the out come. Read more about it here.


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Development


Git Worktree: The Git Feature You Should Be Using  - Most developers rely on the single-folder model for Git repositories. But this approach can lead to unnecessary complications when switching contexts, especially during urgent fixes. This article outlines how utilizing git worktree can streamline your workflow and improve productivity. Read more on Hackernoon here.


I built 59 free browser-based dev tools in vanilla JS - here’s what I learned  - Building a collection of 59 free browser-based developer tools is no small feat. By using only vanilla JavaScript and avoiding dependencies, the tools ensure your data stays private and secure. This article outlines the key lessons learned from the development process. Read more on DEV.to.

So, that was the August 2026 edition of theVar.
I hope you enjoyed it, and feel free to suggest and comment on it, simply by replying to this mail.
Also, if you created a unique content you think can be included here - drop me a note!
Looking forward for your feedback!

Cheers,

Memi